Finding the Fourth Proportional to 63,090, 87,065.46 and 40,772.88

Step by Step Solution

1. Step 1: Write the proportion equation
   63,090 : 87,065.46 = 40,772.88 : x
2. Step 2: Convert to fraction form
   63,090/87,065.46 = 40,772.88/x
3. Step 3: Cross multiply
   63,090x = 87,065.46 × 40,772.88
4. Step 4: Simplify right side
   63,090x = 3,549,909,552.72
5. Step 5: Solve for x
   x = 3,549,909,552.72/63,090
6. Step 6: Final answer
   x = 56,267.39